Whey Protein is a highly nutritious and functional protein that comes from dairy milk whey. Protein is an essential macronutrient that is necessary for tissue building and repair and contributes to the growth of muscle mass and maintenance of normal bones. Whey Protein is a complete, high-quality protein that contains all the essential amino acids that cannot be synthesized by humans and is particularly high in leucine, which is known to stimulate muscle protein synthesis at the molecular and genetic level.